The Men's Arc'teryx Thorium Hooded Puffer Jacket is a warm, versatile, and standalone hoody built to deliver thermal performance in cold environments. It is packed with 750 fill-power Responsible Down Standard certified grey goose down for outstanding warmth-to-weight ratio. The jacket features Down Composite Mapping, strategically placing Coreloft synthetic insulation in areas prone to moisture buildup and down in core areas for maximum warmth. The light, durable Arato 30 nylon shell has a DWR treatment to repel water, while the adjustable, insulated StormHood adds extra warmth and protection. With articulated patterning for unrestricted mobility and a regular fit designed for comfortable layering, the Thorium is ready for travel, commuting, hiking, and everyday cold-weather use.